From: Andreas Schwab <schwab@suse.de>
To: Richard Biener <richard.guenther@gmail.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] lto: pass through -funwind-tables and -fasynchronous-unwind-tables
Date: Wed, 25 Jan 2023 14:50:45 +0100 [thread overview]
Message-ID: <mvm5ycuvi2y.fsf@suse.de> (raw)
In-Reply-To: <CAFiYyc2GmxHYHM1Wt2HwyGM9zJvspfYiSwOrBWD6odfoAhVmwA@mail.gmail.com> (Richard Biener's message of "Wed, 25 Jan 2023 14:16:26 +0100")
On Jan 25 2023, Richard Biener wrote:
> where we'd prefer -funwind-tables over -fno-unwind-tables when the
> options do not match
> across TUs. Note that you likely want to add
> -f[asynchronous-]unwind-tables handling
> in lto-options.cc:lto_write_options as well so the default is streamed
> as explicit option.
> Otherwise a single TU with -fno-unwind-tables on x86-64 would cause
> the whole LTO
> compilation to be built without.
I don't think we actually need to handle -fasynchronous-unwind-tables
here, since that implies -funwind-tables, and only the latter is
relevant for dwarf2out_do_eh_frame.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
prev parent reply other threads:[~2023-01-25 13:50 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-18 10:16 Andreas Schwab
2023-01-18 11:05 ` Richard Biener
2023-01-18 11:25 ` Andreas Schwab
2023-01-18 11:31 ` Jakub Jelinek
2023-01-18 12:30 ` Andreas Schwab
2023-01-18 12:35 ` Jakub Jelinek
2023-01-18 12:39 ` Andreas Schwab
2023-01-18 12:47 ` Jakub Jelinek
2023-01-18 13:00 ` Andreas Schwab
2023-01-18 14:03 ` Michael Matz
2023-01-18 14:14 ` Andreas Schwab
2023-01-18 14:25 ` Jakub Jelinek
2023-01-18 15:11 ` Andreas Schwab
2023-01-18 14:27 ` Jakub Jelinek
2023-01-18 15:09 ` Andreas Schwab
2023-01-18 15:11 ` Jakub Jelinek
2023-01-18 15:16 ` Michael Matz
2023-01-18 15:19 ` Jakub Jelinek
2023-01-18 15:32 ` Michael Matz
2023-01-18 16:09 ` Andreas Schwab
2023-01-18 16:25 ` Jan Hubicka
2023-01-18 16:28 ` Jakub Jelinek
2023-01-18 15:07 ` Jan Hubicka
2023-01-19 7:14 ` Richard Biener
2023-01-18 13:36 ` Andreas Schwab
2023-01-25 13:16 ` Richard Biener
2023-01-25 13:50 ` Andreas Schwab [this message]
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